Chris@88: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@88: 
Chris@88: /*
Chris@88:     Sonic Visualiser
Chris@88:     An audio file viewer and annotation editor.
Chris@88:     Centre for Digital Music, Queen Mary, University of London.
Chris@88:     This file copyright 2006 Chris Cannam.
Chris@88:     
Chris@88:     This program is free software; you can redistribute it and/or
Chris@88:     modify it under the terms of the GNU General Public License as
Chris@88:     published by the Free Software Foundation; either version 2 of the
Chris@88:     License, or (at your option) any later version.  See the file
Chris@88:     COPYING included with this distribution for more information.
Chris@88: */
Chris@88: 
Chris@88: #ifndef _FFT_FILE_CACHE_H_
Chris@88: #define _FFT_FILE_CACHE_H_
Chris@88: 
Chris@88: #include "FFTCache.h"
Chris@96: #include "MatrixFile.h"
Chris@88: 
Chris@88: class FFTFileCache : public FFTCacheBase
Chris@88: {
Chris@88: public:
Chris@90:     //!!! This is very much a work in progress.
Chris@90:     //
Chris@88:     // Initially, make this take a string for the filename,
Chris@88:     // and make the spectrogram layer have two, one for the main
Chris@88:     // thread and one for the fill thread, one RO and one RW, both
Chris@88:     // using the same string based off spectrogram layer address
Chris@88:     // or export ID.
Chris@90:     // Subsequently factor out into reader and writer;
Chris@90:     // make take arguments to ctor describing FFT parameters and
Chris@88:     // calculate its own string and eventually do its own FFT as
Chris@88:     // well.  Intention is to make it able ultimately to write
Chris@88:     // its own cache so it can do it in the background while e.g.
Chris@90:     // plugins get data from it -- need the reader thread to be able
Chris@88:     // to block waiting for the writer thread as appropriate.
Chris@88: 
Chris@96:     FFTFileCache(QString fileBase, MatrixFile::Mode mode);
Chris@88:     virtual ~FFTFileCache();
Chris@88: 
Chris@88:     virtual size_t getWidth() const;
Chris@88:     virtual size_t getHeight() const;
Chris@88: 	
Chris@88:     virtual void resize(size_t width, size_t height);
Chris@88:     virtual void reset(); // zero-fill or 1-fill as appropriate without changing size
Chris@88: 	
Chris@88:     virtual float getMagnitudeAt(size_t x, size_t y) const;
Chris@88:     virtual float getNormalizedMagnitudeAt(size_t x, size_t y) const;
Chris@88:     virtual float getPhaseAt(size_t x, size_t y) const;
Chris@88: 
Chris@88:     virtual void setNormalizationFactor(size_t x, float factor);
Chris@88:     virtual void setMagnitudeAt(size_t x, size_t y, float mag);
Chris@88:     virtual void setNormalizedMagnitudeAt(size_t x, size_t y, float norm);
Chris@88:     virtual void setPhaseAt(size_t x, size_t y, float phase);
Chris@88: 
Chris@90:     //!!! not thread safe (but then neither is m_mfc)
Chris@90:     virtual void setColumnAt(size_t x, float *mags, float *phases, float factor);
Chris@88: 
Chris@88: protected:
Chris@90:     float *m_colbuf;
Chris@96:     MatrixFile *m_mfc;
Chris@88: };
Chris@88: 
Chris@88: #endif